Apparatus for cooling a passenger vehicle



Dec. 26, 1933. I H. E. NORVlEL 1,941,363

APPARATUS FOR COOLING A PASSENGER VEHICLE Filed May 2 1931 22 Z 3 v A 7 (i CUTOUT RELA Y /4 T0 lG/V/T/O/V zz ixz Patented Dec. 26 19:33

UNlTED l'srA'Tss' PATENT OFFICE 1,941,363 4 APPARATUS ron COOLING A PASSENGER v vnnicm Harry E. Norviel, Anderson, Ind., assignor to Delco-Remy- Corporation, Anderson, Ind., a corporation of Delaware Application May 28,- 1931. Serial no. 540,653

2 Claims.

This invention relates to the coolingof a passenger vehicle particularly during the period when the vehicle is not in: motion. When driving a passenger vehicle particularly a taxicab or passenger bus during fair and relatively hot weather it is of course desirable to keep the windows open in order that there will be a circulation through the vehicle induced by the motion of the vehicle.

mosphere while the vehicle is not in motion.

One of the objects of the present invention is to provide means for automatically turningon an running of the vehicle the electric fan is not operative but when the battery starts to discharge a into the generator, the fan will be automatically caused to operate.-

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawing wherein a preferred embodiment of one form of the present invention is clearly shown.

In the drawing: The figure of the drawing is a wiring diagram illustrating the use of the present invention.

In the wiring diagram 20 designates a generator driven by the engine which propels the vehicle. The generator 20 is grounded at 2 1 and connected by wire22 and to a reverse current relay 23 connected by a wire 24 with a storage battery 25 which is grounded at 26. The wire 24 is connected with a switch 27 connected by wire 28 with an electric motor 29, which operates a fan 30. The fan motor 29 is connected by wire 31 with a switch comprising starting contacts-32 and 33 the latter being grounded at 34. The switch comprises also a-movable contact 35 which normally rests by gravity against a stop 36 and which is connected by a rod 3'? with a magnetizable armature 38 located in the magnetic iield of a magnet coil 39 connected by a wire 40 with wire 24 and by a wire 41 with wire 22..

The operation of the invention is as follows: While the vehicle 18 moving at a substantial rate of speed such that the air circulating through the open windows is such it makes the passengers Of course when the vehicle stops the circulation of air ceases and the passengers. ofttimes are forced to endure humid sultry atcomfortable, the vehicle engine is operating at such a speed that the generator 20 driven thereby will charge the battery. The voltage of the generator under such conditions is thatthe cutout relay will operate to close the battery charging circuit/through the wires 22 and 24. Under these conditions the current flowing through the magnet coil 39 is insufflcient to cause the armature 38 to be moved into position for causing the contacts 32 and 33 to be engaged by the contact 35. Hence, the-fan motor 29 will not operate although the manually operable switch 2'7 may then be closed.

However, when the speed of the vehicle is relatively low or when thevehicle has stopped the voltage of the generator 20 will be less than a predetermined value thereby causing the cut-out relay 23 to operate to interrupt the circuit between' the wires 22 and 24 thereby preventing the discharging of the storage battery 25 directly through the generator 20; Under these conditions the battery 25 will discharge through the magnetic winding!!!) thereby supplying to the coil 39 an amount of current suf ficient to cause the armature 38' to be attracted into position for caus- V ing the contact 35 to engage the contacts 32 and 33. When this occurs the storage battery 25 will be connected with the fan motor 29 provided the manually operable switch is then closed.

In this way the present invention provides for automatically turning on the motor vehicle fan when the vehicle stops and for turning ofi the fan whenthe vehicle attains a substantial degree of speed.

While the form of embodiment of the present 0 invention as herein disclosed, constitutes a preferred form; it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows:

1. Apparatus for cooling an automotivevehicle comprising in combination; a storage battery; a generator driven by the vehicle for charging the storage battery; a reverse current relay adapted to connect-the generator and battery at a prede-' termined generator voltage; an electric motor driven fan; .an electromagnetic switch having a single winding interposed between the battery and the generator and adapted to connect the fan motor with the battery for the operation of same only when the voltage output of the generator is below the predetermined value to chargethe battery, said switch having one end of the winding co nected between the u relay and t y and the other end connected between the cut-out relay and generator. g n 2. Apparatus for cooling an automotive vehicle comprising in combinetion; a. generator driven by the vehicle; a storage battery charged by the generator; an automatic-switch aflected by generator voltage for connecting and disconnecting the generator and battery; an electric motor driven fan; and an electromagnetic switch for controlling the circuit between the storage battery and the fan to open the i 

